Gwyneth Paltrow: "Marriage is hard"

The 38 year-old has been married to Coldplay's frontman for seven years and has recently revealed how on occasion their relationship is far from perfect.

"Sometimes it’s hard being with someone for a long time," she told Elle magazine. "We go through periods that aren’t all rosy. I always say, life is long and you never know what’s going to happen."

Despite this, she went on to give Chris a glowing tribute as a father to their children Apple, seven, and five-year-old Moses.

"If, God forbid, we were ever not to be together, I respect him so much as the father of my children. I made such a good choice. He’s such a good dad. You can never be relaxed or smug and think, 'I’ve got this thing'."

"That’s also part of it: keeping yourself on your toes. I’m not going to take this for granted."

Meanwhile, Gwyneth's hectic work schedule continues as her new film Contagion is released in October and sees her star alongside Matt Damon in a story that follows the spread of a highly contagious and deadly disease.